bug#22207: emacs-25 mishandles info code text on Fedora 23

[Eli Zaretskii]

> From: Glenn Morris <rgm@gnu.org>
> Cc: eggert@cs.ucla.edu,  22207@debbugs.gnu.org
> Date: Sat, 19 Dec 2015 22:40:56 -0500
> 
> Eli Zaretskii wrote:
> 
> >> Inherit from string face?
> >
> > You mean, font-lock-string-face?
> 
> Yes.
> Anyway, I think I am just muddying the waters, so will shut up.
> See the merged bug for Stefan's ideas.

Let's start with fixed-pitch -- Paul, does that display OK on that
Fedora 23 system?  Glenn, does that display differently from the
default font on yours?